We supply blasting grit trademarked KONTRASIL®. Its a synthetic mineral blasting grit made of melted coal slag according to ISO 11126-4.
Chemical properties:
| SiO2 | 48 - 54 Masse - % |
|---|---|
| Fe2O3 | 7 - 12 Masse - % |
| Al2O3 | 24 - 30 Masse - % |
| K2O | 2 - 5 Masse - % |
| CaO | 4 - 12 Masse - % |
Technical data:
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Available sizes
all sizes in mm
Melted coal slag arises during the generation of electricity from coal. The liquid fire proof components of the coal are cooling down in a water bath. The solidified liquids are broken, dried and classified into several granulations.
Characteristics:
- no silicosis danger, because there is no free crystalline silica acid
- no carcinogenic or toxic components
- no water-soluble components
- no waters or air pollution
- no subsequent changes of the sand-blasting products
Application range:
- Pretreating concrete surfaces before restoring
- Derusting steel by means of compressed air jet technology
- Surface preparation (removal of paint and rust)
- Polishing, cleaning and grinding
Dorsten
